How many atoms of silver are present in a 75-gram pure sample? 1.2×10⁻²⁴ 1.34×10⁻²⁰ 4.2×10²⁴ 4.87×10²⁷ Show answer 📝 Detailed explanation Number of atoms = (75 ÷ 107.87) × 6.022×10²³ ≈ 4.2×10²⁴ atoms.